Mark custom chart bar color to legend in EXT JS 5 - extjs

Question

I have an issue while using custom legend color in EXTJS 5 chart. I can apply custom color to the chart legend but i cannot apply that to the legend item. In EXT JS 4, i can use one override function to in series to handle it. like
getLegendColor: function(index) {
var proSpeciality = ["#EFD07B","#0082AD"];
return proSpeciality[index];
}
But this is not available in EXT JS 5.
Sample code.
Ext.create('Ext.Container', {
renderTo: Ext.getBody(),
width: 600,
height: 400,
layout: 'fit',
items: {
xtype: 'cartesian',
store: {
fields: ['name', 'value','value2'],
data: [
{name: 'metric one', value: 10,value2: 15},
{name: 'metric two', value: 7,value2: 15},
{name: 'metric three', value: 5,value2: 15},
{name: 'metric four', value: 2,value2: 15},
{name: 'metric five', value: 27,value2: 15}
]
},
axes: [{
type: 'numeric',
position: 'left',
title: {
text: 'Sample Values',
fontSize: 15
},
fields: 'value'
}, {
type: 'category',
position: 'bottom',
title: {
text: 'Sample Values',
fontSize: 15
},
fields: 'name'
}],
legend: {
docked: 'top',
style: {
stroke: '#ffffff',
'stroke-width': 2,
opacity: 1
},
tpl: [
'<tpl for="."> ',
' <div class="myLegendItem" style="float:left;margin:5px;padding:0px;cursor:pointer;">',
' <div class="" style="float:left;margin:2px;width:12px;height: 12px; background:{mark};"></div><div style="float:left;">{name}</div> ',
' </div> ',
' </tpl>'
],
itemSelector: '.myLegendItem'
},
series: {
type: 'bar',
xField: ['name'],
yField: ['value','value1'],
stacked: false,
renderer: function(sprite, record, attributes, index, store) {
var proSpeciality = ["#EFD07B","#0082AD","#00A67B","#AD1808","#520084"];
attributes.fill = proSpeciality[index % proSpeciality.length];
return attributes;
},
getLegendColor: function(index) {
var proSpeciality = ["#EFD07B","#0082AD"];
return proSpeciality[index];
}
}
}
});
Please let me know if i need to change something.
Thanks in advance

Answer 1

Try to use "colors" property within series:
series: {
type: 'bar',
colors: ['orange', 'yellow'],
...
}
Example: https://fiddle.sencha.com/#fiddle/bk1

Answer 2

Answering the question about 'global colour arrays' (which I can't answer in the comments section - not enough reputation. Aleksei Mialkin is quite right in his solution), you can use a singleton to hold these sorts of values
Ext.define("MyApp.colours", {
singleton: true,
COL1: 'orange',
COL2: 'red',
COL3: 'blue',
COL4: 'green'
});
Then reference as
...
colors: [MyApp.colours.COL1, MyApp.colours.COL2],
...